In the fast-paced world of digital marketing, every new communication channel can feel like a secret weapon waiting to be discovered. For SaaS and e-commerce brands especially, staying ahead often means finding smarter ways to connect with users—whether that’s for onboarding, authentication, or direct offers. Today, we’ll dive into a case study of a mid-size SaaS company that turned to long term mobile number rental with Verify Now to tackle rising verification drop-off rates and boost user trust. Their journey offers valuable insights for digital marketers looking to optimize cross-channel communications and improve performance across the funnel.
The Challenge: Growing Pains and Verification Bottlenecks
Meet FlowStack, a SaaS company offering productivity tools to remote teams. As their user base grew into new markets, so did the complexity of their user verification process. Like many digital-first companies, FlowStack relied heavily on SMS-based authentication to confirm identities during sign-up and major account actions. However, their marketing and growth teams noticed troubling trends:
- SMS deliverability was becoming inconsistent across markets
- New leads from PPC campaigns abandoned onboarding due to failed phone verification
- Frequent number turnover from short-term rental services disrupted SMS reach and user trust
These issues not only affected user sign-up and retention metrics but also increased operational headaches. When they crunched the numbers, FlowStack realized that these verification gaps were costing them over $4,000/month in churned leads and customer support interventions alone.
Finding a Reliable Long-Term Solution
FlowStack’s marketing operations lead began researching more stable communication channels—and that’s when they discovered long term mobile number rental through Verify Now. Unlike short-term burners that are recycled frequently, long-term rented numbers are assigned to your business for extended use. This offers consistency across SMS campaigns, onboarding flows, and even customer support messages.
After a risk-free trial, FlowStack made the switch. The Verify Now team helped provision dedicated virtual numbers across six target markets, ensuring local number presentation with global cloud uptime. This setup instantly added a layer of professionalism and reduced the appearance of spam, one of the reasons users ignored initial verification texts.
Community Insights: Why Other Marketers Made the Same Shift
FlowStack isn’t alone. We spoke with three other Verify Now users in different verticals—health tech, marketplace apps, and D2C e-commerce—who also turned to long term mobile number rental for the same reasons:
- Brand Consistency: Long-term numbers boost trust. Customers get used to seeing the same sender across transactional and promotional SMS.
- Improved Deliverability: Because numbers aren’t shared or rotated, messages are less likely to be blocked or marked as spam.
- Data Continuity: Dedicated virtual numbers allow for ongoing campaign performance analysis—you’re not starting from scratch with every blast.
These learnings form a compelling case for integrating long-term rented numbers into your CRM strategy, especially if you’re operating in multiple regions.
Implementation: How FlowStack Integrated Verify Now
FlowStack took a two-phase approach to implementation. In Phase 1, they focused on secure onboarding by replacing their rotating verification numbers with Verify Now-dedicated lines. Within two weeks, they saw a 12% improvement in first-time verification completions.
In Phase 2, they extended use of their long-term numbers to send reactivation nudges and feature updates directly to verified users. Using UTM links, they tracked an 8.7% increase in mobile re-engagement rates. Their CRM team appreciated the seamless webhook integration and 24/7 uptime support that came with Verify Now’s platform.
Actionable Tips: What You Can Apply Today
Whether you’re running regional SMS campaigns or just tired of losing high-intent leads at verification, here are four actionable tips you can learn from FlowStack’s playbook:
- Audit Your SMS Experience: Walk through your mobile authentication flow from a user’s perspective. Are the messages timely? Are they coming from numbers that look trustworthy?
- Prioritize Local Presentation: Users are more likely to respond to numbers that appear local. Verify Now helps provide regional numbers with global reliability.
- Choose Long-Term Over Short-Term: With long-term mobile number rental, you gain consistency, higher reliability, and improved user trust. Stop rotating numbers and start building continuity.
- Track & Optimize: Use verification and engagement KPIs to measure impact. Combine with CRM insights to iterate faster across geographies.
The Results: Better KPIs and Fewer Support Tickets
Three months after onboarding with Verify Now, FlowStack achieved the following benefits:
- +14% boost in onboarding completions from mobile users
- -36% decrease in account verification support tickets
- +9.1% increase in click-through rates for SMS-delivered promotions
Their marketing and CX teams now collaborate more seamlessly, and users face fewer barriers to engaging with the platform.
Conclusion: A Simple Switch That Paid Off
For FlowStack and many others, the adoption of long term mobile number rental was more than just a fix—it became an operational advantage. In digital marketing, simplicity scales. Dedicated mobile numbers offered the stability, branding continuity, and performance tracking FlowStack’s growing platform needed.
If you’re seeing similar cracks in your communication flow or just want to future-proof your SMS strategy, it might be time to consider making the switch.
Try it risk-free and see how long-term mobile number rental can boost your bottom line.
