Email is one of the cheapest marketing channels per message, but the bill can still surprise you. This guide explains what actually drives the cost, how to estimate a realistic monthly budget, and the hidden extras, from overage charges to foreign-currency billing, that are easy to miss.
What you’re really paying for
Two plans with the same headline price can end up very different once these are added together, so always compare the total for your real usage.
- Contacts: most platforms price by the number of contacts you store, and many count unsubscribed and inactive ones too.
- Sends: some plans cap your monthly emails or charge per thousand sent.
- Features: automation, A/B testing, landing pages, AI tools and advanced reports are often reserved for higher tiers.
- Team seats: extra users, roles and approval workflows can carry per-seat charges.
- Sending infrastructure: dedicated IPs, extra sending domains, or the cost of your own SMTP or Amazon SES account if you bring one.
- Support: phone support, onboarding help or a named account manager may cost extra.
The main pricing models
| Model | How it works | Best for |
|---|---|---|
| Contact-based | You pay for the size of your audience, usually with generous sending. | Regular senders with a steady list: weekly newsletters, frequent promotions. |
| Send-based | You pay for the number of emails sent, whatever your list size. | Large lists mailed occasionally, or seasonal businesses. |
| Pay-as-you-go credits | You buy blocks of emails that are used up as you send. | Very occasional senders and one-off announcements. |
| Hybrid | A contact limit plus a monthly send allowance. | Most growing businesses. Check both limits. |
Estimate your monthly budget
- Count your real contacts Start with active, consented contacts, not every address you have ever collected. Then add your expected growth over the next 12 months.
- Work out monthly sends Multiply contacts by campaigns per month, then add automated emails (welcome series, cart reminders, birthdays) and any resends.
- List the features you’ll actually use Automations, A/B tests, landing pages, team seats. Pick the lowest tier that covers them.
- Add tax and a buffer Include GST and any add-ons, plus headroom for growth so a busy month doesn’t push you into overage.
A worked example
Here’s how a small online store with 8,000 subscribers might estimate its monthly sending volume. The numbers are illustrative.
| Item | Calculation | Emails per month |
|---|---|---|
| Weekly newsletter | 8,000 contacts × 4 sends | 32,000 |
| Monthly sale announcement | 8,000 contacts × 1 send | 8,000 |
| Resend of the sale to non-openers | about 60% of 8,000 × 1 | 4,800 |
| Welcome series | 400 new subscribers × 4 emails | 1,600 |
| Abandoned-cart reminders | 300 carts × 2 emails | 600 |
| Total | 47,000 |
So this store needs a plan for roughly 9,000 contacts, allowing for growth, and around 50,000 emails a month. Add the features it needs (automation for the welcome and cart flows, two team seats), then GST, and it has a realistic monthly figure to compare providers on like for like.
Hidden costs to watch for
- Overage charges when you pass your contact or send limit, sometimes billed automatically at a higher rate.
- Unsubscribed, bounced or duplicate contacts counting towards your limit.
- The same person billed twice because they sit in two separate lists or audiences.
- Paid add-ons for things you assumed were included: dedicated IPs, extra users, landing pages, transactional email or removing the provider’s branding.
- Annual plans that lock you in before you know your real usage.
- Price rises at renewal once an introductory discount ends.
- Your team’s time. A cheaper tool that takes hours to use isn’t really cheaper.
Paying in dollars from India
Many email tools bill in US dollars. Beyond the headline price, an Indian business can face extra costs and paperwork:
- Exchange-rate swings that change your bill from month to month.
- Forex markup and fees from your bank or card on every payment.
- Recurring international card payments being declined, which can interrupt sending.
- GST on imported services. If your business is GST-registered and the foreign provider doesn’t charge Indian GST, you may have to pay it yourself under the reverse charge mechanism, then claim input tax credit if you’re eligible.
- Invoices that aren’t in the format your accountant needs.
MailNesto is priced in rupees and issues GST invoices, so the amount you see is the amount you pay and claiming input tax credit is straightforward. Your chartered accountant can confirm how tax applies to your specific purchases.
Ways to keep the bill down
- Clean your list every quarter. Removing contacts who never engage can lower your tier and improves deliverability at the same time.
- Use one audience with tags and segments instead of several overlapping lists, so each person is counted once.
- Choose a plan with some headroom rather than paying overage every month.
- Automate repeat work. A welcome series or birthday email written once saves hours of team time every month.
- Track revenue per campaign, so you know which emails earn their keep and which you can drop.
- Review your plan twice a year as your list and needs change.
Questions
Is a free plan enough?
Free plans are fine for testing and very small lists. They usually limit sends, add the provider’s branding and leave out automation. Once email drives real revenue, a paid plan normally pays for itself.
Should I remove inactive contacts to save money?
Often, yes. Contacts who haven’t opened or clicked in six months or more cost money and hurt deliverability. Run a re-engagement campaign first, then remove or suppress those who don’t respond.
Monthly or annual billing?
Start monthly until you know your volume, then switch to annual if the discount is meaningful and your list is stable.
How is transactional email priced?
Receipts, password resets and OTPs are often priced separately, by volume. Check whether they count against your marketing limits before you sign up.