Quick answer
Constant Contact SMS pricing starts at $10 per month for up to 500 billed messages on eligible US Lite and Standard plans. Premium includes the first 500. Start with your existing email tier and reserve part of the SMS allowance for the texts your store already sends automatically.
Ask for the next SMS tier if the campaign you plan to send would exceed the remaining allowance. Consider Premium for the email features or limits you need. The first 500 units are only one part of that decision.
See the sources and method for the scope of this comparison.
What the $10 starting price covers
The email plan and the SMS tier are separate decisions. The email base varies by plan and contact tier. The SMS tier covers a quantity of billable message units in one billing cycle. You need an email plan to buy the SMS add-on, so a prospective customer cannot use $10 as the cost of a stand-alone texting account. An existing customer can treat it as the starting incremental charge if the current email plan already supports the workflow they need. Constant Contact add-on terms.
Put two questions at the top of the quote. First, can your current plan run the exact Shopify path you want? Second, what does a typical month of campaigns and automation cost on that plan? You might need more automation capabilities or a second operator even when SMS volume is low. In that case, the higher email plan is doing work besides increasing your text budget. Price the work together and show the two charges separately.
The public price card presents this schedule for US accounts. The help center also describes separate eligibility for Australian customers. Use the US quote for this comparison and have the vendor confirm your business location and recipient markets. A sender registration that works for one merchant or country does not establish eligibility for your store. Check the official account requirements before treating the tool as a viable option. Registration requirements.
Compare the three plan lines at the same contact tier
Use the same starting contact count and billing term for all three proposals. The figures below are the US starting monthly prices displayed on the public card. The subtotal assumes the account can use the displayed starting prices and stays within 500 billed SMS units and the applicable email allowance. It excludes other add-ons, taxes and contract-specific charges. Public plan prices and limits.
| Email plan | Starting email price | First 500 billed SMS units | Starting subtotal |
|---|---|---|---|
| Lite | $12 per month | Up to 500 at $10 starting add-on | $22 before other charges |
| Standard | $35 per month | Up to 500 at $10 starting add-on | $45 before other charges |
| Premium | $80 per month | First 500 included | $80 before other charges |
In that narrow case, the included SMS allowance does not make Premium the cheaper way to buy those first 500 units. It costs $35 more than the Standard starting subtotal. An existing Premium customer has a different choice. If the plan is already justified by email and the account can complete SMS registration, the included units are a reason to test the workflow before buying a separate sender.
The comparison can move when email volume is uneven. The price card lists monthly email allowances of 10, 12 and 24 sends per contact for Lite, Standard and Premium respectively. It also lists $0.002 for each additional email beyond the allowance. If two quotes at the same contact tier differ by 3,000 chargeable email sends, that changes the comparison by $6. An email send overage and moving into a higher SMS tier are different billing events. Keep both lines on your worksheet so that a finance reviewer can reproduce the difference. Email send allowances and overage.
Check the billing snapshot as well as today’s list count. Constant Contact distinguishes the contact tier, which is based on the highest active email count the account has had, from the highest billable count in the current period. SMS-only contacts are excluded from the email contact tier. A store that temporarily imported a much larger email audience may get a different next bill than a quote based on its cleaned-up list. Ask the seller to show which contact tier the sample invoice uses. How to read your account bill.
If you’re adding SMS just to recover carts
Constant Contact’s SMS add-on makes sense to evaluate when you want to send texts through the same campaign program as email. Ask what the chosen contact tier and message segments would cost.
If the work is getting back to shoppers who left Shopify checkout and answering their questions, compare Zobi on that job. Keep the email program that already works and ask who would own each recovery send before starting.
See how Zobi follows up on carts and applyFree to apply.
Count the messages on the bill
Start with actual campaigns and triggered messages from one ordinary month and one sale month. For each send, record eligible recipients and the number of segments in the final text. Multiply them and add the outgoing service messages the provider bills. The billing guide includes messages from automation as well as responses sent automatically when people opt in, opt out or ask for help. Keep those responses in a separate row, especially if you plan to collect a lot of new opt-ins in one week. What counts toward the tier.
For example, an eligible Shopify store has 180 SMS subscribers. It sends two one-segment campaigns, giving 360 units. The cart automation sends 65 one-segment reminders, and the store records 40 billable outgoing service units. The total is 465. During a sale, the second campaign needs two segments, 80 reminders go out and service messages total 42. That raises billed usage to 662. Audience size stayed the same. The final message length and the two automation rows changed the bill.
| Usage item | Ordinary month | Sale month |
|---|---|---|
| Campaigns | 180 × (1 + 1) = 360 | 180 × (1 + 2) = 540 |
| Cart reminders | 65 × 1 = 65 | 80 × 1 = 80 |
| Outgoing service units | 40 | 42 |
| Total billed units | 465 | 662 |
At 465, the first tier covers the modeled activity and leaves 35 units of headroom. At 662, the same 500-unit tier does not cover the month. The add-on documentation says usage above a tier moves the account into the tier that matches actual volume. Do not turn the difference into a per-text charge by multiplying 162 by an invented overage rate. Ask for the price for the tier your 662-unit scenario reaches.
Now test the boundary using the ordinary month. Thirty-four extra units bring it to 499. Thirty-five bring it to exactly 500. Thirty-six bring it to 501. At 501, the quote needs the next applicable tier, even if the extra unit came from a single service response or a second segment on a reminder. On the other side of the threshold, the help center says unused units do not roll into the next cycle and you still pay for the selected tier. A wider allowance can give you predictability, but you should price that decision on purpose. Below-tier and above-tier billing.
How many recipients fit in your remaining SMS allowance?
Plan the broadcast after reserving space for the texts that will go out anyway. Constant Contact counts SMS campaigns, automation sends and qualifying automated outgoing messages. A store can use part of its 500-unit allowance without a member of the marketing team pressing Send. Pull the billing-cycle usage and a reasonable estimate for scheduled automations before you choose the campaign audience.
Suppose 140 billed units are spoken for between sends already logged and automations likely to run before renewal. The 500-unit tier leaves 360. If the editor shows one segment per recipient, that covers up to 360 recipients on that assumption. If it shows two, it covers 180. Sending the two-segment version to 250 people would bring the projected cycle to 640 units.
| Message in the editor | Maximum recipients from 360 units |
|---|---|
| One segment per recipient | 360 |
| Two segments per recipient | 180 |
At that point you have three useful options. Keep the longer text and price the higher tier. Rewrite it and verify the shorter version in the actual editor. Or send it to a smaller audience without crowding out the automations you need. The add-on documentation says usage above your chosen tier moves you into the corresponding tier. Get the price and the next renewal setting from your account before scheduling.
This check can also change which tool you buy. If the add-on would routinely force a choice between time-sensitive automations and a campaign, compare both jobs and both tiers in a separate quote. If it gives you room for the sends you already want to make, keeping your existing email setup is a simpler decision.
Rehearse the longest version of the text
Open the actual message editor. Put in the store name, the full destination link, the discount if one applies, and the longest realistic contact value. Look at the editor’s segment count and estimated total after you select the recipient list. The sender name and opt-out copy are included in the character count. A short text in a planning spreadsheet can become a longer billable text in the real send. Message editor and preview.
Check the variants that matter. A plain reminder for one product may stay within one segment. A promotion that adds a code or uses an emoji can change the total. Some shoppers may see different content because a personalization field expands. Use a control contact with a short name and a second with the longest value you reasonably expect. Save the editor’s result for both as evidence for your forecast. The billed segment count is a better budget input than applying a universal character rule.
For Shopify cart reminders, the provider’s tutorial describes one URL in the SMS and a cart-specific placeholder. Keep that link in the test. The version that saves a segment by dropping the shopper’s usable cart link may have a lower message cost and a worse journey. Ask whether the personalization and link your store needs can remain in a shorter version. You can then price the short and long forms and decide which one meets the customer’s need. Abandoned cart SMS setup.
Prove which Shopify events and replies the quote covers
The Shopify integration guide describes syncing contacts and running ecommerce email tasks. Its separate cart automation tutorial documents a Shopify template with email and SMS actions and points buyers to the appropriate plan and add-on. Ask to see the actual path on your intended tier. A connected store and an active SMS campaign do not tell you which cart event starts the reminder.
Run the same checkout four ways. Start with an eligible test subscriber who leaves a cart and can receive a reminder. Next, complete the purchase before the reminder is due. Use a separate contact who can receive email but has never opted into SMS. Finally, leave another eligible cart while the old sender or Shopify native reminder is still configured in the test environment. Before enabling a live path, look at the logs for the event, who was eligible, which system queued each send and what happened after purchase. Your purchase-stop and single-owner criteria are buyer acceptance checks, not assumptions about defaults.
| Case | Evidence to bring back |
|---|---|
| Eligible abandoned cart | Cart event, recognized profile, SMS permission and next eligible send. |
| Order completes before send | Order event receipt, the same profile and the final message state. |
| Email subscriber only | Email treatment is visible, and no SMS is queued under the store’s eligibility rule. |
| Old sender still present | Every active path and the one owner assigned to the next reminder. |
If someone replies to ask whether an item fits, the price and flow preview tell you very little about who sees the question or answers it. Ask the vendor to show the reply route, the product information visible to the operator and whether the next scheduled message can be paused. When the store is buying shopper conversation support, Start growing revenue is relevant to that narrower job. Compare the actual reply and handoff with your existing campaigns kept in scope. An email or SMS campaign replacement is a different purchase.
Budget the period before you can send
Constant Contact lets customers try the editor and preview the message before buying. The help center separates that trial from sending a registered campaign. It also states that the chosen paid tier can be charged even if you have not registered or sent any texts. Draft your real text and estimate its segments first. Check sender requirements and who will own the approval before adding the paid feature near a campaign deadline. What the preview lets you try and add-on billing questions.
The registration guide lists business identity and online policy requirements and gives an estimated approval period of seven to ten business days. Treat that as provider guidance. A typo or a rejected application may push a planned send past a promotion, so agree on a fallback channel and keep the old sender until the new workflow passes. Do not switch both at once. In the vendor’s documented mid-cycle purchase, the add-on is prorated. Ask which bill will show the first charge and what the next full cycle will cost. Registration timing.
Include the cost of leaving in the decision. The add-on help page says removing the add-on deactivates registration and forfeits the SMS number immediately. If the number matters, verify your options in writing before removal. Ask for a snapshot of current permission states, identify any messages still queued, and have your replacement team prove the next send on a controlled profile first. Cancelling a subscription and pausing future sends are separate choices. Someone should be able to explain the effect of each before you agree on a cutover date.
Price the work you would keep either way
Suppose the store already pays for Constant Contact email and plans to keep it. Compare the SMS add-on with a separate sender on incremental cost. In both columns, keep the existing email bill where it is. In the add-on column, include the SMS tier, any required email-plan upgrade and time to own the path. In the separate-sender column, include that provider’s rate and the work of moving consent, matching the order event and monitoring two systems. The email invoice only becomes a saving if the proposed change really removes it.
Now run the reverse case. The store is replacing both email and SMS. This time, the entire email base belongs in the comparison. Take the low-usage starting case from the table. If Standard plus the add-on is $45 and Premium is $80, the price difference is $35 before any other items. In a month where Standard has 3,000 chargeable email sends beyond its allowance and Premium has none, the documented overage adds $6 to Standard. That narrows the difference to $29. At 662 SMS units, you need both exact higher-tier amounts before repeating the calculation. The public starting figures do not settle the peak-month choice.
Check the term on each proposal. Constant Contact describes an account balance for some prepaid plans and says added services or contact-tier changes can use that balance faster than expected. The billing guide also says prepayments are non-refundable. A buyer who expects to move in three months should compare the real amounts due and the value left in the current commitment. Do not assume that an add-on selected partway through the term creates a new free month or a refund of the existing term. Prepayment and plan changes.
Keep three lines separate in the final quote. Record cash due this month, recurring costs in a full cycle and one-time migration work. Name the people responsible for the Shopify path and reply queue. That gives finance a number it can reconcile and the operator a scope they can actually test.
Ask how a sale month would show up on the bill
Take one normal month and one sale month to the quote. Keep the email plan and the SMS add-on on separate lines, as Constant Contact’s pricing and help pages do. Bring one actual reminder from the busiest day and open it in the proposed account. Use the final link and the longest realistic name so you can see the editor’s segment count for the text you plan to send.
- Email planContact tier and included email sends.
- SMS add-onBilled message units after segmenting the final text.
- Compare two monthsQuote both components for a typical month and a sale month.
Use that count with your eligible audience for the sale month. Ask the rep to show which SMS tier the resulting usage lands in, how the change appears on the invoice, and what tier applies the following month if volume drops again. Write down any difference between the trial, the month registration finishes and a normal renewal.
Make the platform choice using both months. If the account will handle Shopify reminders, verify the flow trigger and purchase stop separately. An email plan and an SMS add-on can be easy to price and still be the wrong fit for the recovery job.
Read the provider documentation for the behavior described above.
What to ask for before upgrading
Ask each finalist for two quotes based on the same inputs. Give them the billable email contact tier, scheduled email sends, ordinary and sale SMS units, sender requirements and the Shopify paths you must retain. Request the monthly base, the exact tier that applies at each usage level, any pass-through charges or included allowances, and the cost and ownership of replying to customers. Compare cash outlay over the same term, especially if one plan prepays and another bills monthly.
Use the Constant Contact SMS quote worksheet to record those inputs and the expected bill lines. Ask the vendor to show where you can retrieve the same totals after a campaign. Reconcile the first full invoice to the email tier, the text units and any upgrade from usage. If the numbers differ, determine whether the contact count, length, automated messages or a commercial term moved. That explanation helps next month’s budget more than an average cost from the public price card.
Keep the current email plan and add SMS when it supports the needed path, the normal and peak quotes are affordable, and one person can own the send. Consider Premium when its additional email or operating features justify the price on the same usage assumptions. Compare a separate service when the store mainly needs a reply workflow, or when its existing email and cart setups are already working and only one job is missing. A failed purchase-stop test, unclear number handling or an unanswered quote line is a reason to pause the purchase even if the starting monthly number looks attractive.
Download the buyer worksheet to keep the quote and test results together.
Sources and method
We read Constant Contact’s US pricing, billing, add-on, registration and Shopify workflow documentation. Prices and account rules are documented as of November 10, 2026. The worked store examples show the arithmetic on stated assumptions. Obtain the actual tier amounts and terms for your account before committing.
Zobi publishes this guide and offers shopper conversation services for Shopify stores. Our SMS segmentation guide explains how message length changes the number of units that get billed.
Publisher disclosure
Zobi publishes this guide and offers shopper conversation services for Shopify stores.
See how Zobi handles shopper conversations for your store.
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